Erling sarjent



E. SARJEN T.

ENGINE. APPLICATION FILED mums, n9.

'1,350,57Q PatentedAug.24,1920,

WITNESSES Y mmvmn ,ZZT/Sa/r 'eni A TTURNEYS I VERLIHNG sARJnNrgoi 'KrNerrsrrEn, OKLAHOMA,

, hpplication filed Julyii29, isle. seriarno. 313,965,. '1

T 0 all who mil? mama; A

Be it known that I, ERLING SAnJnNfi,;a citizen of the United ,S'tateaand a, resident of Kingfisheryin theicounty of Kingfisher This invention relates to improvements in engines, and more particularly to 'a compound engine in which the otherwise waste gases are utilized to drive an expansion engine, which latter may also be utilized as a starting means for the internal combustion engine.

y A further object is to provide an engine of the character stated in which a gas receiver is interposed between the internal combustion engine and the expansion engine, and a portion of the exploded gases from the internal combustion engine is admittedand stored in the receiver and supplied to the expansion-engine as desired, the supply being under control.

With these and other objects in view the invention consists in certain novel features of construction, and combinations and ar rangements of parts, as will be more fully hereinafter described and pointed out in the claims. I

The accompanying drawing is a sectional plan view illustrating my improvements.

1 represents a cylinder of an internal combustion engine. While I have illustrated the same of the ordinary type for exploding an air and gas mixture, it is, of course, to be understood that instead of the same I might employ any ordinary form of the Diesel or similar type, in which oil is supplied to the cylinder and mixed with the air to be burned therein.

The cylinder 1 is provided with a piston 2 having a connecting rod 3 connecting the same with a crank disk 4 on a drive shaft 5. 6 represents a cylinder of the ordinary type of expansion engine having a reciproeating piston 7 therein connected by a rod 8 with a crank disk 9 on the drive shaft 5. The cylinder 6 is provided with the ordinary valve chest 10 having a slide valve 11 therein connected by a rod 12 with an eccentric 13 on shaft 5,'the latter having'an ordinary fly wheel 14 fixed thereto.

The cylinder 1 is provided with an intake valve 16 and an exhaust valve 15 operated in any approved manner, and a primary exhaust port 17 is provided in the wall of the "Specification of Letters Patent. I Patdnfifl Aug;

cylinder and is opened the as the latter reaches the extreme otits, power stroke. This port 17 is normally closed-by a valve 18 havingaa coiled spring19- exerting the necessary pressure thereon.

The port l7-is connectedby apipe 20 with afgas receiver 21 and the latter is connected by a pipe 22 with the valve chest 10, a suitable cock 23 being located in the pipe 22.

The operation is as follows: On the power stroke of piston 2, when the latter uncovers the port 17,'if the pressure in cylinder 1 is greater than in container 21, the valve 18 will be opened so that a portion of the exhaust will escape through the port 17 into the container 21.

It is a well known fact that in the great majority of cases, the gases are only par tially burned and the greater portion of such unburned gases is adjacent the piston, hence by locating the port 17 as indicated, I am enabled to recover this unburned portion of the gas and store the same in the container 21. The port 17 will be long enough for all practical purposes and will be cut off by the piston 2 when the latter begins its exhaust stroke so that the valve 18 can readily close.

The gas in container 21 is admitted to the valve chest 10 and operates the piston 7 by its expansion force at both ends of the cylinder 6, as will be readily understood. cock 23 is normally opened and may be closed when it is desired to stop the engine. The container 21 will have therein a sufficient quantity of gas under pressure to operate the piston 7 and start the engine, hence doing away with the necessity for other means for turning over the piston of the explosion cylinder.

It is apparent that the size and number of ports 17 can be varied as desired, and a wide range of modification might be resorted to in the apparatus without departing from my invention, hence I do not limit myself to the precise details set forth but consider myself at liberty to make such changes and alterations as "fairly fall within the spirit and scope of the appended claims.

I claim: 7

1. The combination with an expansion engine, and an internal combustion engine, of a gas'container located between the engines, a pipe connecting the container with the valve chest of the expansion engine, said internal combustion engine having a port in its wall constituting a valve seat and located, at a UNITED eE- NTQ F C The point which will be uncovered by thepiston of the internal combustionengine as the-latter reaches the end of its power stroke, a

valve casing at the side of the cylinder in closing the said port, a valve in said port and a pipe connecting the tank with said. valve; casing, whereby the pressure of gas in the casing operates to maintain the valve in closed position.

2. The combination with an expansion engine, and an internal combustion engine,'of a gas container located between the engines, a pipev connecting the container with the valve chest of the expansionengine, saidinternal combustion engine having a port in its wallconstituting a valve seat and located at a point which will be uncovered by the piston'otthe internal-combustion engine as the latter reaches the end of its power stroke, a

valve casing at the side of the cylinder inclosing the said port, a valve in said port, a

pipe connecting the tank Withsaid valve cas ng, whereby the pressure of gas in the casing operates to maintain the valve 1n ERLING SARJ'ENT. 

